Unable to Shuffle Videos in a Playlist?

I am currently using iTunes 12.2. If I create a playlist that contains either movies or TV shows, there does not appear to be a means of shuffling the playlist. If I select the playlist in iTunes, there is a Shuffle button in the title bar, but I am not able to select it. In older versions of iTunes, there was an option for each file to disable called "Skip when Shuffling", but the setting appears to be gone altogether. Am I missing something?